Door lock



Aug. 23, 1938. e. A. PLATIN DOOR LOCK Filed Dec. 5, 1934 4 Sheets-Sheet l G. A. PLATIN Aug; 23, 1938.

DOOR LOCK Filed Dec. 5, 1934 4 Sheets-Sheet 2 Aug. 23, I AT 2,128,014

DOOR LOCK Filed Dec. 5, 1934 4 Sheets-Sheet s 72 7/ a +QITTTP- l Aug. 23, 1938. 6. A. PLATIN 2,128,014

DOOR LOCK Filed Dec. 5, 1934 -4 Sheets-Sheet 4 to the bolt.

Patented Aug. 23, 1938 DOOR LOCK Giista Adolf Platin, Kalmar, Sweden Application December 5, 1934, Serial No. 756,173 In Sweden December 7, 1933 7 Claims.

The present invention relates to a door lock and has for its object to provide for separate actuation of a member, according as the door is closed or opened from the one or the other side, such member consisting either of a pawl for the lock or of a contact device, by means of which the current for an electric lamp located on the one or the other side of the door is switched on and oil.

Thus one object of the invention is to devise the lock in such manner that the door can always he opened and closed from the inside of the room to which it leads, while the door can be opened from the outside only upon having last been closed from this side. On the other hand, should the door have been closed the last time from the inside, a person being thus within the room, the door shall not permit of being opened from the outside.

A further object of the invention is to provide for automatic switching on and off of the electric light in that room to which the door leads, when the door is being opened and closed, so that the light is switched on upon a person entering the room and remains switched on while that person is within the room, and is put out when the person leaves the room.

The lock according to the invention is particularly suitable for telephone stalls, toilet rooms, conversation rooms, and in all such cases where it is desirable that the light be automatically switched on in the room upon entering the same and is likewise automatically switched off upon. leaving the room, while access to the room from the outside shall be impossible as long as the room is occupied.

According to the invention, in a door lock having a bolt of a corresponding locking member to close the door and provided with two handles, one on each side of the lock for the actuation of the bolt to open and close the door, the one handle is arranged to impart a movement to the bolt with respect to the lock and the other handle is arranged to impart another movement Moreover, there is a member to bring about the desired operation, which member is adapted to be subjected to actuation by the bolt generally, or to actuation by the bolt in a certain manner at the one movement thereof from a position with the door open to its position of rest with the door closed, while said member is not to be subjected to actuation by the bolt or to an actuation by the bolt in someother way at the corresponding second movement of the bolt. The actuation of the member here is dependent on the cooperation of the bolt with an abutment or the like provided in the one path of movement of the bolt, such abutment or the like being secured on a door post, a second door and so forth.

The two difierent movements of the bolt at the manipulation of the handles may be of difilerent kinds. In a preferred embodiment of the lock, both movements of the bolt take place in the same plane parallel to the longitudinal direction of the bolt, the one movement being preferably a rectilinear parallel movement and the other a swinging movement. Also, both movements may be swinging movements and rotary movements in various combinations, or may be movements 15 of a similar character performed in opposite directions. Furthermore, the two movements may coincide in part.

As the member to be actuated in different ways by the two handles, or to be actuated generally by the one handle while not being actuated at all by the other handle, has for its object to lock the door against unauthorized opening of the same from the outside, said member consists of a locking member for either one of the movements of the bolt from its position of rest, with the door closed, to a position with the door open. Actuation of the member, when the door is closed from the outside, here consists in making this locking member inoperative, so that 30 the door can thus be reopened from the outside. On the other hand, when the door is closed from the inside, the locking member will not be actuated, but remains operative for the locking of that movement of the bolt which can be effected by'means of the outer handle.

If the member to be actuated in different ways by the two handles consists of a switch connected in the circuit of an electric lamp in the room to which the door leads, the bolt or other locking member of the lock is adapted to cooperate with and to move relatively to the switch in such a manner that the light is switched on or oif when'the lock is opened from the one side, then remains switched on or oiT respectively both when the lock is closed and then opened from the other side, and is finally switched off and on respectively when the lock is closed from the first-mentioned side.

Preferably, the lock is at the same time provided both with looking members to prevent unauthorized entrance into the room, and with a switch for the breaking and closing of the current.

A few embodiments of the invention will now be described more closely with reference to the accompanying drawings. Fig. 1 shows a first embodiment of the lock according to the invention in elevation and partly in vertical section. Fig. 2 shows the same viewed from above and partly in horizontal section. Figs. 3 and 4 show the same as Fig. 1, with the bolt of the lock in another position. Figs. 5 and 6 are vertical sections of the lock on line 5--6 in Fig. 1, the lock having here been locked from the outer and the inner side respectively. Fig. 7 shows a vertical section of an insertion lock adapted to be arranged within a door. Fig. 8 shows the same, with the bolt of the lock in another position. Fig. 9 shows a vertical section of the look at right angles to Fig. 8. Figs. 10 and 11 show the same as Fig. '7, with the parts in another position. Fig. 12 shows a vertical section on line I2-I2 in Fig. 11, with some of the parts omitted. Figs. 13, 14 and 15 are vertical sections of a third embodiment of the lock. Figs. 16, 17 and 18 are sections of a modified embodiment of the switch arranged in the door post, in three planes at right angles to each other. Figs. 19-24 show a further embodiment of the lock according to the invention, Fig. 19 representing the same in vertical section, and Fig. 20 the same in elevation. Figs. 21 is a horizontal section on line 2 I--2I in Fig. 19 and Fig. 22 shows the same with the parts in another position. Fig. 23 is a view from below, looking from line 23--23 in Fig. 19. Fig. 24 is a section on line 24-24 in Fig. 20. Fig. 25 is a horizontal section of an ordinary insertion lock inserted into a door and having a contact device made in accordance with the invention and arranged on the inside of the door and the door post. Figs. 26 and 27 show cross sections of the lock spindle. Figs. 28 and 29 are sections through the switch cooperating with this lock.

In the embodiment according to Figs. 1-6, the inner and outer handles of the lock I and Ia respectively are independent of each other insofar as the lever 2 connected to the inner handle I (Fig. 4) engages an upwardly bent edge 39 on the bolt 23 and displaces the same backwards in known manner, a pin 36 secured in the lock housing A and projecting into a slit 3'! in the bolt 28 then serving as a guide, while the lever 3 connected to the outer handle Ia only swings the bolt upwardly (Fig. 3) about the pin 36. A spring 4 inserted between the bolt and the lock housing keeps the bolt in the initial position when the handles are not actuated.

Inserted into the door case on a level with the lock is an electric switch enclosed within a casing 5. The switch comprises a pivoted contact flap 32 actuated by the spring 38, a fixed contact 33 and a resilient flap 6, which is pivoted about 34 and provided with an arm 35 between which and the lock housing is inserted a spring 8. The arm 35 has a pin 90 which on the movement of the flap 6 cooperates with the contact flap 32. When the flap 6 takes the vertical position according to Fig. 6, the circuit is closed, whereas it is broken when the flap 6 takes the position according to Fig. 5. The switch casing has a catch 1 adapted to engage the lock bolt 28 when the door is closed. When the door is closed from the outside, the bolt 28 is engaged by said catch, the contact flap 6 being then displaced by the lock bolt (Fig. 5) and the circuit being broken. If the door be opened by the outer handle, the arm 3 thereof is caused to lift the bolt 23 so much as to cause the same to be disengaged from the catch I, so that the door can be opened, the flap 8 actuated by the spring 8 then swinging forwardly and taking its vertical position, so that the circuit is closed. When the door is then closed by the inner handle, the latter by its lever 2 moves the bolt 28 backwards, so that the bolt is brought past the flap 6 and then projects behind the flap and into the catch I (Fig. 6). The flap 6 then remains unactuated, the circuit being still closed. Now, the door cannot be opened by the outer handle, which by means of its arm 3 only lifts the bolt 28, so that it cannot move past the flap 6. In this manner, the door is locked from within. The lever 2 of the inner handle I only can pull the bolt 28 back in such a way as to cause the same to move past the flap 6 for the opening of the door. When the door is then closed by the outer handle, the arm 3 thereof lifts the bolt which is brought into engagement with the catch "I while at the same time moving back the contact flap 6, the arm 35 of which then breaks the circuit.

In the insertion lock shown in Figs. 7-12, the contact flap I9 moves in the same plane as the lock bolt I2. Here, the lock handles 9 and IB are concentrically mounted on each other in such manner that the outer handle 9 is movable on the spindle II] of the inner handle I6. Secured on the spindle is a pin or the like II which at the turning of the shaft is freely movable in a slot in the handle 9. The handle 9 consequently does not then follow in the movement. The lock bolt I2 is displaceably attached to a disk I3 in that two pins 40, 4| secured on the disk project into a slit 42 in the bolt I2. A helical spring 43 inserted between the disk I3 and the bolt I2 forces the bolt outwardly. The disk I3 is rotatably mounted on the spindle of the handle. When the outer handle 9 is turned, a lever I4 secured thereto moves the bolt I2 inwardly, a pawl I5 then preventing the disk I3 from turning. When the inner handle I6 is turned, a lever II secured thereto releases the pawl I5, the disk I3 being then turned by the said lever II, the latter engaging a pin 44 secured in the disk I3, so that the lock bolt I2 is swung upwardly and, together with the disk I3, displaced rearwardly to such an extent that the bolt is retracted entirely into the lock housing (Fig. 8). When the inner handle I6 is released, it will be returned by the helical spring 45 into its initial position, the lever I! then striking against the pin 46 secured in the disk I3 and the latter being also returned into its initial position. In principle, the switch in this embodiment is of the same construction as in the previous embodiment, with the difference only that, when the door is closed with the bolt I2 in the projecting position, the contact flap I9 moves under the influence of the bolt I2 in the same plane as the latter (Fig. 7), and, when the door is closed with the bolt swung up, the same takes a position over the flap I9. The bolt I2 is provided with a transverse recess I8, so that the contact flap I9 is not brought into contact with the bolt, when the latter is lowered over the flap, but remains unactuated. (Fig. 12). The door is now locked so that the same cannot be opened from the outside, but can be opened by the inner handle I6 only and the lever I7 thereof, which then lifts the bolt I2 over the flap I9.

In the insertion lock shown in Figs. 13, 14 and 15, the two handles are arranged above one another. Thrust onto their spindles I40 and MI are sleeves I42 and I43, which are mounted in bearings I44 and I45 provided in the lock. Secured to the sleeve I42 is a short arm I46 which like a fork embraces the lock bolt I41 and is pivotally secured thereto by means of a pin I48. The other sleeve I43 likewise has an arm I49 which by means of the pin 56 is, pivotally connected to a link 56, the other forked end of which embraces the bolt I41 while being pivotally secured thereto by means of a pin SI. 52 and 53 are stops for the arms I46 and I49 respectively. These stops limit the movements of the bolt and thereby the upward swing of the handles when the person using the door removes his hand from the handles (see Fig. 13). When the lower handle is depressed, the bolt turns about the pin I48, until it strikes against the upper limitof the opening 54 in the end plate 55 of the lock and takes the position shown by chain-dotted lines in Fig. 13. When the upper handle is depressed, the bolt is moved straight backwardly, the link 50 then swinging about the pin 56 which is now stationary. This rearward movement of the bolt is limited by the link 58 being caused to bear against the stop 52. Fig. 14 shows the extreme position reached. In the embodiment of the look now described, the lock may also be opened from the locked side by means of a key 5? cooperating with a pin 58 of square cross section on the spindle I40 of the upper handle.

Figs. 16, 17 and 18 show a further embodiment of the switch arranged in the door post. This embodiment diflers from the others substantially in that the fiap 28 is here pivoted about a vertical axis 29. Secured to the flap 28 is an arm 93, which carries a resilient piece 94 adapted electrically to connect the contacts 95 and 96. Fig.

16 shows with full lines the position of the flap 28 and the arm 93 in which the circuit is closed. Here, the flap 28 is kept pressed onto the casing 31] by a spring 3|. Fig. 16 represents by chaindotted lines the position of the flap 28 and the arm 93 in which the flap 28 has been swung back by the projecting lock bolt 33 at the closing of the door by the outer handle, and in which position the circuit is broken. When the handle is released, the lock bolt engages the catch 32 in the manner indicated in Figs. 5 and 6.

The switch according to Figs. 19-24 has a flap 65, which is pivoted about a vertical shaft 66, and which by means of the spring 67 is kept pressed against the one side of the housing 68 in the manner shown in Fig. 20. Provided in the upper part of the housing 68 are two metal bars 69 and I6, which are connected each with one of the wires to be connected to cause the electric incandescent lamp to be lit. Secured to the bar 69 is a pin II, which carries a flap I2 mounted thereon, said flap being kept pressed by means of a helical spring I3 against a contact pin 14 secured on the other metal bar ID. The parts 69, III, II, I2 and 14 all form electrical conductors, so that the circuit will be closed in the position shown in Fig. 23. Secured'to the flap 65 is a projection of insulating material, which projection engages the flap I2 and thus breaks the circuit when the flap 65 is moved back by the lock bolt. Provided in the lower part f th housing 68 is a helical spring 16, which is arranged on the shaft 66, and the one movable nd II of which is bent upwardly and bears against the flap 65 behind the same. In the positio shown in Fig. 22, this spring I6 is inoperative, in that the end I! of the same is prevented from turning the flap 65, and is instead retained in the position shown by the triangular member I9,

which is pivotally mounted on a pin I8 and bears against a set screw 80. At the adjustment of the screw 86 shown in Fig. 22 the lock operates in the same manner as in the embodiments hereinbefore described. When the door is opened from the outside by a latch bolt having the two types of movements previously described, the flap 65 thus returns from its displaced position into the position of rest shown in Fig. 20, and then closes the circuit. Upon subsequent closing of the door from the inside the door is locked so as not to permit of being opened from the outside. By screwing out the set screw 86 it is possible, however, to alter the lock so that the process will be somewhat different. If the set screw is screwed out into the position shown in Fig. the spring I6 will move the flap 65 into the position shown in Figs. 21 and 24, inasmuch as said spring is stronger than the spring 61. In this position of the flap '65, the projection I5 presses against the flap I2 and keeps the electric circuit broken. When the lock is opened from the outside, the displaced flap 65 will thus return only to the position shown in Fig. 21, the circuit thus being still broken. Only when the lock is closed from Within will the bolt 9| which to this end is bevelled ofi as shown in Fig. 24, engage the flap 65 to move the same out into the position shown in Figs. and 23, the circuit being thus closed and the look at the same time locked against opening from the outside.

In the embodiment according to Figs. -29, the door lock is an ordinary insertion lock of known construction. The outer handle 20 moves the bolt to and fro in ordinary manner. Movably mounted on the spindle 2| of this handle, in the manner previously described and illustrated in Fig. 9, is the inner handle 22, that is to say, the spindle 2I is provided with a pin 25 movable in a slot in the sleeve-shaped portion of the inner handle. Secured on the inner handle 22 inside the door is an arm 23 which directly actuates the contact flap 24 of the switch attached to the door post (Fig. 29). When the outer handle 20 adapted to actuate the lock bolt is depressed, the inner handle 22 remains immovable, inasmuch as the pin 25 on the spindle 2I moves freely in the slot of the handle 22 (Figs. 25 and 26). The arm 23 therefore remains immovable in its horizontal position and can press back the contact flap 24, so that the current is interrupted when the door is closed from the outside (Fig. 29). When the door is closed or opened by the inner handle 22, the outer handle 2I is entrained in the move' ment, inasmuch as the pin 25 then serves as a carrier. The lock bolt is moved back simultaneously with the swinging of the arm 23 above and past the flap 24. In this embodiment, too, the door is locked from the inside, inasmuch as only the inner handle 22 can lift the arm 23 over the flap. When the outer handle 20 (Figs. 25 and 26) is turned down, the stationary inner handle 22 is retained in its horizontal position by means of a helical spring 26 (Fig. 27) the one end of which is secured to the door or the lock housing, while the other end of the same grasps about a boss 2! on the handle 22.

Lock bolts of various kinds and a plurality of shapes, and movable in the manner above described, may also be adapted directly to actuate ordinary push switches, rotary switches and time switches, and may impart impulses in different Ways for the breaking or closing of the electric circuit.

What I claim is:

l. A door lock comprising a lock housing and two rotary operating devices attached thereto, a lock bolt having a slit and a portion projecting from said bolt; a pin secured to said housing and extending into said slit, means fixed to one operating device and adapted to engage the bolt from below to swing the bolt, means fixed to the other handle and ads pted to engage said projecting portion of the bolt to displace the bolt rectilinearly, a keeper device, and movable locking means operable upon projection of the bolt to keeper engagement following retraction thereof by one of said handles for preventing retraction of the bolt from keeper engagement by the other of said handles.

2. A door lock comprising a lock housing, two spindles mounted. therein, a handle attached to each of said spindles, a lock bolt, an arm rigidly secured to the one spindle and pivotally secured to said bolt, another arm rigidly secured to the other spindle, a link, one end of said link being pivotally secured to the last-mentioned arm and the other end being pivotally secured to said bolt, a keeper device, and locking means operable upon projection of the bolt to keeper engagement following retraction thereof by one of said handles for preventing retraction of the bolt from keeper engagement by the other of said handles.

3. A door lock comprising a keeper, a spring projected lock bolt, means mounting said lock bolt for a rectilinear movement and alternatively a swinging movement into and out of keeperengaging position, actuating means for displacing said bolt rectilinearly, a second actuating means for swinging said bolt, each actuating means including a manually operable member and said members being located at opposite sides of the lock, and bolt-actuated means operable upon projection of the bolt to keeper engagement following retraction thereof by one of said actuating means to prevent retraction of the bolt from keeper engagement by the other of said actuating means; said bolt-actuated means including a displaceable member disposed in the path of the bolt as it is spring projected after retraction by said other actuating means and outside the path of the bolt as it is spring projected after retraction by said one actuating means.

4. A door lock comprising a spring projected lock bolt, means including a handle at one side of the lock for moving the bolt along a rectilinear path, means including a handle at the other side of said lock for moving said bolt along an angular path, and keeper means operable subsequent to movement of said bolt into latching position along one of said paths for locking said bolt against movement from latching position along the other of said paths, said keeper means including a member automatically displaceable from a lock-' ing to an unlocking position by the bolt as it moves to latching position along said other path.

5. A door lock as claimed in claim 4, wherein said keeper means includes a keeper having an opening in one edge through which said bolt enters along the said rectilinear path and an opening in an adjacent edge through which said bolt may enter the keeper when moved along said angular path; and said keeper member comprises a plate pivotally mounted for move rent to close the second keeper opening, and spring means tending to retain said keeper member in closing position across said second opening.

6. In a door lock, the combination with a spring projected lock bolt and a keeper device, of bolt actuating means operable to displace said lock bolt along two diiferent paths to move the same out of engagement with said keeper device, said means including handles at opposite sides of the lock and each individually operable to actuate said means to effect retraction of the bolt along one path of movement, and locking means operable to prevent retraction of the bolt by the first of said handles following a spring projected movement of the bolt into keeper engagement after a retraction by the second handle; said locking means including a member and means tending to move said member into position to block retraction of the bolt from the keeper device along the path established by actuation of the first handle, said member being located outside the other path of movement of the bolt and being automatically moved out of motion-blocking position by the bolt upon movement thereof into keeper engagement following a retraction of the bolt by said first handle.

'7. In a door lock, the invention as claimed in claim 6, wherein said bolt actuating means includes means operable by one handle to displace the bolt along a rectilinear path and means operable by the other handle to displace the bolt along an arcuate path.

GOSTA ADOLF PLATIN. 

